Introduction; Common Devices; Functions Of Common Devices; Device List - Delta AH Series Operation Manual

AH Mo t io n C on tr o ll er – O p er a t io n M a nu a l

5.1. Introduction

The chapter introduces the concept of common devices which will be used thoughout the programming process. In
addition to the common devices, to complete a more complicated program you may also need to use other elements such
as symbols, enumerations which are also introduced in this chapter. For motion control programming, there are also
specific motion control devices which can be used for setting motion axis parameters. As long as you equipped yourself
with the knowlege of devices and symbols, you are ready to use instructions for programming.
For detailed information of instructions, refer to AH Motion Controller - Standard Instructions Manual and AH Motion
Controller - Motion Control Instructions Manual.

5.2. Common Devices

This section describes the concept of values/strings and devices which include input/output/auxiliary relays, timers,
counters, and data registers.

5.2.1. Functions of Common Devices

The procedure for processing the program in the PLC:
Input ter minal X
Regener ating the input signal
Device memory
Processin g th e prog ram
_5
Device memory
Regener ating the output s ignal
and sending it to the output ter minal

5.2.2. Device List

Type
Input relay
Output relay
Bit device
Data register
Link registers
Auxiliary relay
Special auxiliary
5 - 2
Device name
X 8192
Y 8192
D 1048576
L 1048576
M 8192
SM
 Regenerating the input signal:
1. Before the program is executed, the state of the external
input signal is read into the memory of the input signal.
2. When program is executed, the state in the memory of the
input signal does not change even if the input signal
changes from ON to OFF or from OFF to ON. Not until the
next scan begins will the input signal be refreshed.
 Processing the program:
After the input signal is refreshed, the instructions in the
program are executed in order from the start address of the
program, and the results are stored in the device memories.
 Regenerating the state of the output:
After the instruction END is executed, the state in the device
memory is sent to the specified output terminal.
Number of devices Range
X0.0~X511.15
(Supporting Force ON/OFF)
Y0.0~Y511.15
(Supporting Force ON/OFF)
D0.0~D65535.15
L0.0~ L65535.15
M0~M8191